only a good option if you are cool with simply spraying the outside of the filter instead of fully saturating it. My filter gets dirty quick because my KX500 has vent holes in the air box. I take major precautions. I recommend this because I am excited about a quick spray while I am on the road. This will coat for extra protection without cleaning. oh ya...a good option instead of grease on the rim of the filter. Won't be as difficult to clean off.